Given a matrix of integers A of size N x M consisting of 0, 1 or 2.
Each cell can have three values:
Every minute, any fresh orange that is adjacent (Left, Right, Top, or Bottom) to a rotten orange becomes rotten.
Return the minimum number of minutes that must elapse until no cell has a fresh orange.
If this is impossible, return -1 instead.
Note:
Input Format
The first argument given is the integer matrix A.
Output Format
Return the minimum number of minutes that must elapse until no cell has a fresh orange.
If this is impossible, return -1 instead.
Constraints
1 <= N, M <= 1000
0 <= A[i] <= 2
For Example
Input 1:
A = [ [2, 1, 1]
[1, 1, 0]
[0, 1, 1] ]
Output 1:
4
Input 2:
A = [ [2, 1, 1]
[0, 1, 1]
[1, 0, 1] ]
Output 2:
-1
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